Pneumatic Double Diaphragm Pump
Air-Operated Double Diaphragm (AODD) Positive Displacement Pump
Pneumatic double diaphragm pump (AODD) for versatile transfer of corrosive, abrasive, viscous, and shear-sensitive fluids in chemical, mining, and wastewater applications.
Product Specifications
| Flow Rate | 0.5 - 100 m³/h |
|---|---|
| Head | up to 70 m |
| Power | Air-operated (no electricity) |
| Speed | Variable (air pressure controlled) |
| Casing Material | Aluminum / Cast Iron / 316SS / PP |
| Diaphragm Material | PTFE / Santoprene / Hytrel / Neoprene |
| Max Temperature | 120 °C (PTFE) / 70 °C (Santoprene) |
| Max Pressure | 0.7 MPa |
| Seal Type | Sealless (diaphragm) |
| Standard | ATEX / CE |
Product Description
The pneumatic double diaphragm pump (AODD) is a positive displacement pump that uses compressed air to alternately actuate two flexible diaphragms, creating a vacuum and pressure cycle that moves fluid through the pump. With no rotating parts, seals, or electrical components, it offers exceptional versatility and safety. The AODD pump can run dry indefinitely, self-prime from dry, and handle a wide range of fluids from thin chemicals to viscous slurries.
Applications
- Chemical transfer
- Mining slurry
- Wastewater treatment
- Paint & coatings
- Pharmaceutical dosing
- Tank unloading
Quality Assurance
All pumps are manufactured under ISO 9001 quality management system. Each pump undergoes rigorous testing including hydrostatic pressure test, performance test, NDT inspection, and dynamic balance verification before shipment. We provide comprehensive documentation including test reports, material certificates, and operation manuals.
Why Choose Our Positive Displacement Pumps
Pneumatic Double Diaphragm Design
Air-operated double diaphragm pump for chemical transfer, with self-priming capability and dry-running protection for versatile industrial applications.
No Electricity Required
Pneumatic operation eliminates need for electrical power, suitable for hazardous areas, remote locations, and portable transfer applications.
Shear-Sensitive Handling
Gentle pumping action minimizes shear degradation of sensitive products, suitable for polymers, latex, food products, and viscous materials.
Wide Chemical Compatibility
Available in PP, PVDF, aluminum, and stainless steel wetted parts with various elastomer options, covering broad range of chemical applications.
Key Features
Frequently Asked Questions
Can this pump run dry?
What fluids can it handle?
Is it explosion-proof?
Selection Guide
✅ When to Choose This Pump
- High viscosity fluids (above 500 cP)
- Hygienic food and beverage products
- Precision metering and dosing
- Shear-sensitive products
⚠️ When NOT to Choose
- Large volume low-viscosity transfer
- Abrasive slurries with large particles
- High-pressure water injection
- Applications requiring variable flow at constant speed
💡 Common Selection Mistakes
- Not installing pressure relief valve
- Running at too high speed for viscosity
- Ignoring shear sensitivity of product
- Not considering pulsation dampening
Still unsure? Use our Pump Selection Center → or talk to our engineers →
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